What happened
A grey object like a stovepipe, bulging in the middle, with short wings ending in concave tips, made a gargling sound as it hovered and then vanished in the glare of an airplane's landing lights, after four or five minutes.
"shaped like a stovepipe with a center bulge and short wings"Shape words from the Project Blue Book summary
Witnesses
Four Portuguese nationals
Explanation
Unresolved
Sources
- Patrick Gross, Project Blue Book unknowns of 1954ufologie.patrickgross.org
- The Black Vault, Project Blue Book unknown case files, complete listtheblackvault.com
Filed by Project Blue Book as unidentified.